05643197 is referenced by 338 patents and cites 25 patents.

The invention relates to an ablation catheter which controls the temperature and reduces the coagulation of biological fluids on a tip of a catheter, prevents the impedance rise of tissue in contact with the catheter tip, and maximizes the energy transfer to the tissue, thereby allowing an increase in the lesion size produced by the ablation. The ablation catheter includes a tip for applying electrical energy to biological tissue. Passages are positioned within the tip in a variety of manners for directing a fluid flow through the tip to the exterior surface of the tip to control the temperature and form a protective fluid layer around the tip. Monitoring structure is also positioned within the tip for measurement of the electrical potentials in a biological tissue. Ablation electrode structure is also positioned within the tip for application of ablative energy to the biological tissue. A flexible, extended embodiment electrode provides the capability to form deep, linear lesions along a portion of a heart wall during ablation for the treatment of particular arrhythmias.

Title
Fluid cooled and perfused tip for a catheter
Application Number
171213
Publication Number
5643197
Application Date
December 21, 1994
Publication Date
July 1, 1997
Inventor
Steven D Savage
Brooklyn Center
MN, US
Jerome Philip Saul
Newton
MA, US
Gregory G Brucker
Minneapolis
MN, US
Agent
Patterson & Keough P A
Assignee
Angeion Corporation
MN, US
IPC
A61B 17/20
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